/**
 * v-debounce
 * 按钮防抖指令，可自行扩展至input
 * 接收参数：function类型
 */

const debounce = {
  mounted(el, binding) {
    if (typeof binding.value !== 'function') {
      console.log('callback must be a function')
    }
    let timer = null
    el.__handleClick__ = function() {
      // if (timer) clearInterval(timer);
      //
      timer && clearTimeout(timer)
      timer = setTimeout(() => {
        binding.value()
      }, 3000)
    }
    el.addEventListener('click', el.__handleClick__)
  },
  beforeUnmount(el) {
    el.removeEventListener('click', el.__handleClick__)
  }
}

export default debounce
